AR 15 lower

Thank you for the information .. well sounds like if i buy it everything works or can ... Next queston if you will if i buy it is it a bad more or a good one ...Meaning there cheaper but in the long run from all you that know will i enjoy it as my first one ... any infor will help thank you again

Sarco must be a company selling them ? this was a guy here in town bought it and wanted to sell it .... Wife wont let him have it ............ So i want to pick up on it but want to know if i can get all the parts to build it and use it not looking for a wall hanger ...... So if you know anything about them and if compatible parts are readly avalible all the help you can give i would be thankfully for ...Thank you